How to set the network address to 128.0.0.3

[Wayne Yu_1]

We have a client who has all their network IP address at 128.0.*.* network with netmask 255.255.0.0. Both K class server and L2000 servers are okay with that.

I am configuring a new A400 server for them with 64bit 11.00. However, sam on this computer insisted that I could not set the IP address in the 128.0.*.* range.

Why should we care what customers wanted to have their IP address set, as long as they all work and talk to each other?

Is there a way to relax this restriction? Thanks for all your help.

[Wayne Yu_1]

I was able to set the IP address to 128.0.0.3 by editing the /etc/rc.config.d/netconf file. But I still think Sam could give a warning, but should not enforce people from doing it.

[harry d brown jr]

http://www.aplawrence.com/Unixart/net101.html

http://www.itpapers.com/cgi/PSummaryIT.pl?paperid=15233&scid=66

and HP has a few classes on networking:

http://education.hp.com/hp-uxnetworking.htm


and you will have to

ndd parameter ip_check_subnet_addr to 0


live free or die
harry

[Wayne Yu_1]

Harry, Thanks for your reply, but I do not see the reason SAM limit using 128.0.*.* IP address. This customer is a goverment office, they set their network many years ago by using that IP address. It would be a nightmare to go everywhere to change the IP addresses.

I did make change to /etc/rc.config.d/nddconf to ignore the subnet check, which is another pain that many customer complainted.

I say, if the firewall from other vendors allow to use that IP address and/or that subnet, if all other competitors allowing use it without problem, we got allow people do it. If we put such a limit in SAM -- it even pop-up a screen told me those IP addresses that were not allowed, it should also tell people how to bypass such a checking by editing the netconf file.

I don't think net101 fit here, I just want to make suggestion so that HP-UX is easiest to use OS for all the IT people.

[harry d brown jr]

It doesn't matter how long ago anyone "used" an IP, there are rules. My organization actually owns a b-class internet address, and it's in the middle of a computer companies :-) internet ip ranges.

128.0.0.0-128.0.255.255 is reserved for Internet Assigned Numbers Authority. Although it doesn't really matter what you use within your organization, special code was written by HP to stop people from placing servers on the internet with illegal addresses.

live free or die
harry

[Ron Kinner]

It's not being refused because it's a registered address. The subnet checking you turn off enforces the old no all zero or all ones subnet rule which effectively ruled out using the first an last subnets. It's the 0 after the 128. which causes the problem. Try it 128.1 and it should go through OK. Don't know why HP started enforcing this just as it became obsolete. A stupid idea. Just like making IP forwarding on as the default.

Ron